Privacy Switch / Secure Mode on EF and TF Models
Understanding Secure Mode and owner-only access
Original HubSpot URL: https://learn.simpled.uk/privacy-switch-/-secure-mode-on-ef-and-tf-models
What is Secure Mode (Privacy Switch)?
The EF and TF lock models include a Privacy Switch, also referred to as Secure Mode.
When enabled, Secure Mode restricts access so that only the lock owner (Main Administrator) can unlock the door.
This feature is designed to provide maximum privacy and security when required.
It is Intended for scenarios where the lock is used on a bathroom, locker room or other personal space.
Where this feature could create unintended issues, such as with short term rentals, for AirBnB, or on communal doors in a shared building, this switch can be easily disabled in the app.
How Secure Mode works

Enabling Secure Mode
Slide the privacy switch UP to activate Secure Mode
Once enabled:
Only the Main Administrator can unlock the door
Unlocking is possible only via:
The TTLock app
The Administrator Passcode (found under Settings → Basic)
All other access methods are disabled:
Normal user passcodes
Fingerprints
Cards or other credentials
Disabling Secure Mode
Secure Mode can be turned off in two ways:
In the TTLock app, go to:
Lock Settings → Privacy Lock → Off
EF model special behavior
On EF models only, opening the door using the inside handle will mechanically reset the privacy switch to the OFF position
This ensures that Secure Mode is automatically turned off after exit from the inside
Why this matters
Prevents any unauthorized access while Secure Mode is active
Ensures only the owner can unlock the door during privacy periods
Helps staff clearly explain why fingerprints or user codes may stop working
Quick summary
Secure Mode restricts unlocking to the Main Administrator only
Activated by sliding the privacy switch UP
Normal access methods are disabled while active
Can be disabled in the app via Privacy Lock → Off
EF models automatically reset Secure Mode when opened from the inside
EF and TF models offer a simple, reliable privacy feature for enhanced security and controlled access.